var toString = Object.prototype.toString;



function Person(name, age) {
	this.name = name 
	this.age = age 
}

Person.prototype.a = function() {
	return 'bbb';
}
var per1 = new Person('张三', 22)
console.log(per1)

var cc = [2, 2]

console.log(toString.call(per1))
console.log(toString.call(cc))

console.log('-----------------------\n')
